ARMOR-PIERCING BULLET Russian patent published in 2005 - IPC

FIELD: bullet of cartridges use for long-range fire from sniper's rifles for hitting the enemy quipped with individual protection, located behind shelters or in fortified firing posts (permanent firing posts, machine-gun nests), as well as for destruction of light-armored fighting and auxiliary equipment.

SUBSTANCE: the bullet has an envelope with a slug and a jacket located in it. The novelty in the bullet is the fact that the surface of lug nose section l_n is conjugate to the inner surface of envelope l in section l = 0.8…0.83d_b, where d_b- the maximum diameter of the bullet. The beginning of the conjugation is at the base of the slug nose section and has d_l=0.83…0.84d_b, and the end of the conjugation has d₂= 0.46…0.61d_b. The length of the tail tapered section makes up l_t=0.47…0.61d_b, and the slug mass makes up m_s= 0.61…0.68m_b, where m_b- the bullet mass.

EFFECT: enhanced efficiency of fire due to improved close grouping of shots and piercing effect.